import java.util.*;
public class Main2 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int arr[] = new int[n];

        for(int i =0;i<n;i++){
            arr[i] = sc.nextInt();
        }

        for(int i =0;i<n/2;i++){
            System.out.println(arr[i]+" "+arr[n-i-1]);
        }

        sc.close();
    }
}
